1-Amino-4-((3-(ethenylsulfonyl)phenyl)amino)-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid 14541-90-3 2-Anthracenesulfonic acid, 1-amino-4-((3-(ethenylsulfonyl)phenyl)amino)-9,10-dihydro-9,10-dioxo- 34293-80-6 Uniblue A